The Modicon M262 is the first PLC launched by Schneider Electric aimed at the Industrial Internet of Things (IIoT), capable of connecting directly to cloud platforms via protocols such as MQTT and HTTP, with TLS network security encryption. The left side of the image below shows the traditional method of connecting PLCs to the cloud, … Read more
Introduction A communication debugging tool developed based on WPF, featuring a user-friendly interface and easy operation. It supports both Modbus and MQTT protocols, enabling debugging of various communication methods. Whether in industrial automation, smart home, or IoT fields, this tool can meet your needs. Additionally, the code is open source and modular, making it highly … Read more
In the previous issue, we introduced the publish and subscribe framework of MQTT: MQTT Publish and Subscribe Architecture The two most important roles are MQTT clients and MQTT brokers (intermediaries). Let’s quickly review these two core components: The publish/subscribe model decouples the client responsible for sending messages (the publisher) from the client responsible for receiving … Read more
(Add a star to BoLe Online to see classic articles) Source: Ruheng Link: https://juejin.im/post/6844903490595061767 1. TCP/IP Model The TCP/IP protocol model (Transmission Control Protocol/Internet Protocol) consists of a series of network protocols that form the foundation of the Internet and is the core protocol of the Internet.The reference model based on TCP/IP divides the protocols … Read more
1. Overview of the Porting Process Hardware Platform Setup Selection of the main control chip: It is recommended to use the STM32F4 series (such as STM32F407) or Microchip SAMD5x series, which must support SPI/SQI or HBI interfaces to communicate with LAN9253. Hardware connection: LAN9253 connects to the main control via the SPI interface, requiring configuration … Read more
【Introduction】A complete video on the differences and comparisons between PROFIBUS and PROFINET. Recommended Reading (1) A Large System Failure Handling Experience (2) S7-400 DP Communication Failure Handling Example (3) S7-300 PN Communication Failure Handling Example The following video is sourced from PROFINET What Everyone is Watching 【Video】How German Engineers Create PLC Cabinets? 【Video】How are German … Read more
1. Overview PROFIBUS-DP, where DP stands for Decentralized Periphery, is a type of computer electronic component. It features high speed and low cost, used for communication between device-level control systems and decentralized I/O. It, along with PROFIBUS-PA (Process Automation) and PROFIBUS-FMS (Fieldbus Message Specification), constitutes the PROFIBUS standard. 2. Basic Information Specifications The PROFIBUS-DP protocol … Read more
Consider a DC power supply with an output socket interface that has three pins: positive, negative, and ground. Accordingly, the load’s plug should also have three pins corresponding to the power supply side to correctly obtain power supply. Note that there are three essential conditions that must be met: The first is that the shape, … Read more
– RS485: It is a physical layer electrical standard that specifies the electrical characteristics of data transmission, signal levels, transmission distances, and connection methods. It uses differential signaling for transmission, has strong anti-interference capabilities, and can achieve half-duplex communication between multiple devices. It is commonly used for long-distance data transmission in industrial environments. – Modbus: … Read more
This article discusses the conversion from Modbus TCP to Profinet in a master-slave configuration. The process involves understanding the communication protocols and ensuring compatibility between devices. To implement this conversion, you will need to configure the Modbus TCP settings on the master device and set up the Profinet parameters on the slave device. This includes … Read more